Steam-engine lubricator.



R. C. HOLMAN L G. I. THEILE.

STEAM ENGINE LUBRIGATOR.

APPLICATION FILED Mmm, 1911.

1,01 8, 1 1 2. Patented Feb. 20, 1912.

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R. C. HOLMAN & G. I. THEILB.

STEAM ENGINE LUBRIGATOR. APPLICATION FILED MAR.-9, 1911. 1,018,1 12Patented Feb.2o,1912.

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STEAM ENGINE LUBRIGATOR. APPLIOATION FILED MALQ, 1911.

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R.'G. HOLMAN & G. I. THEILB.

STEAM ENGINE LUBRIGATOR. APPLICATION FILED MAR. 9, 1911.

Patented Feb.20,1912.

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Inventors Robert C'. Halma wit esses and Y eorgef. Tlzeile (1L 3D1/DClit or-ney UNTTED STATES PATENT FFICE.

ROBERT C. I-IOIfIl/IAN AND GEORGE I. TI-IEILE, OF HAMILTON, OI-IIO,ASSIGNORS TO THE HOOVEN, OWENS, RENTSCI-ILER COMPANY, 0F HAMILTON, OHIO.

STEAM-ENGINE LUBRICATOR.

To all 'uf/'wm 'it may concern:

Be it known that we, ROBERT-C. HOLMAN and GEORGE I. THEILE, citizens ofthe United States, residing at Hamilton, Butler county, Ohio, haveinvented certain new and useful Improvements in Steam-EngineLubricators, of which the following is a specificanon.

This invention pertains to improved apparatus for lubricating the innersurface of the cylinder of a steam engine and will be readily understoodfrom the following description taken in connection with the accompanyingdrawings in which Figure 1 is a side elevation of a steam enginecylinder, of Corliss or four-valve type provided with our improvedlubricator: Fig. 2 a vertical transverse section through the upperportion of the cylinder in the planes of lines a and b of Fig. 1: Fig. 3a side elevat-ion, on an enlarged scale, of the valverocker andpump-mechanism seen in Fig. 1: Fig. 4 a front elevation of thevalve-rocker and pump-mechanism: Fig. 5 a plan of the pump-mechanism:Fig. 6 a horizontal section of one of the pump-cams in the plane of lineZ of Figs. 1, 3. and 4: Fig. 7 a side elevation of the pump and tank:and Fig. 8 a front elevation of the valve-rocker.

A diversity of scale is employed in the drawings.

In the drawings 1, indicates the cylinder of a horizontal engine ofCorliss or fourvalve type: 2, the upper portion of the cylinder-wall: 3,the usual steam-passage formed in the cylinder casting over the cylinderproper: 4:, the usual double rocker pivoted to the cylinder and adaptedto give motion to the valve-arms in the usual manner: 5, the usual rodfor oscillating the rocker, this rod receiving its motion direct from aneccentric on the engine shaft, or from an intermediate rocker oscillatedby the eccentric: 6, a bracket rigidly supported alongside one end ofthe cylinder: 7, an oil-tank supported by the bracket: 8, a doublelubricating pump, of known construction, supported against the oiltankand receiving its supply of oil therefrom: 9, a rocker-arm at one end ofthe pump, the oscillations of this arm serving to reciprocate one of theplungers of the pump: 10, a similar rocker-arm at the other end of thepump, for independently reciprocat- Speccation of Letters Patent.

Application filed March 9, 1911.

Patented Feb. 20, 1912.

Serial No. 613,271.

ing the second plunger of the pump: 11, a link connected with each ofthe rocker-arms of the pump and extending rearwardly therefrom: 12, aslotted guide supported by the bracket at each side ofthe pump and tankstructure; 13, a pivot-block sliding in each of the guides and havingconnected to it the appropriate one of the links 11: 14, a pivot-shaftsupported by the rear portions of the guides, parallel with the axis ofoscillation of the pump rocker-arm: 15, a pair of cams mounted to rockon shaft. 14., one inward of each of the guides 12, these cams havingcam- ,grooves engaging the pivotblocks 13 in such manner that theoscillation of the cams brings about the reciprocation of thepivot-blocks and the rocking of the rocker-arms of the pump: 16, linksconnecting the arms of valve-rocker 4 with the cams: 17,length-adjusting devices on the links 16: 18, a tube screwed into theupper portion of the cylinder wall near one end of the cylinder and toone side of the plane of the axis of the cylinder, this tube deliveringinto the cylinder: 19, an oil-discharge pipe leading from the pump andinto connection with tube 18. this pipe being adapted to convey to f thecylinder the oil forced out of the pump by one of the pump plungers: 20,a tube screwed into the upper wall of the cylinder near the end of thecylinder opposite tube 18 and on the side of the plane of the axis ofthe cylinder opposite the side at which tube 18 is located: 21, an oildischarge-pipe connecting tube 20 with the pump and serving to conveyvfrom the pump the oil discharged by the action of the second plunger:22, stufling boxes screwed into the top of the cylinder casting to servein packing the upper ends of tubes 18 and 20, which tubes pass throughthe steam space 3 over the cylinder proper: 23, a downwardly openingcheck-valve in tubes 18 and 20, these valves being located at the lowerends of the tubes,-

drop or two of oil at each excursion of its plunger'. As the enginepiston leaves an end of its stroke a drop or two of oil is to beforcefully deliver-cd upon it, this oil being dragged along the cylinderby the movement of the piston and running down the surface of the pistonso that one-half of the cylinder' becomes properly supplied withlubricant during the stroke. Before beginning the return stroke thepiston is to receive a proper supply of oil for the other side of thecylinder. @ne plunger of the pump supplies the oil for one end of thecylinder through the medium of pipe 19 and tube 1S, while the other pumpserves for the other end of the cylinder through pipe 21 and tube fO.rlhe pipe and tube system between the pump and the cylinderbore will befull of oil, and under pressure, and the pump plungers, upon thecompletion of each of their strokes will have forced a drop or two ofoil out of the pipe and tube system past the check-valves, thecheckvalves closing` and leaving the pipe and tube system full of oilunder pressure as before.

The rocker arms of the pump are oscillated in an obvious manner by thecams 15, and these are caused to oscillate by the aotion of valve-rockeri through the medium of links 1G. Considering one of the cams, thenearest one in Fig. 3, this cam pertains to pumperockcr 9. At eachexcursion of the valve-rocker the cam will be given an oscillation, andthe cam-groove is of such form that, as tho valve-rocker moves, thepump-rocker will remain stationary and then make its swing in onedirection and then remain stationary, thus giving to the pump-plungerits active stroke, the operation of the pump-rocker being reversed asthe valve-rocker swings back. The movemontsrof the valve-rocker willbear certain relationship in time to the movements of the engine pistonand the parts may be so proportioned and adjusted that the pumpplungeractuated by pump-rocker' 9 will deliver the proper charge of oil to thecylinder while the piston is under the appropriate one of theoil-delivering` tubes, and the adjusting devices on links 16 serve inproviding` for a nice adjustment of the time of oil delivery. Givingconsideration, now, to the more distant cam in Fig. 3 that cam, havingto deal with the opposite end of the cylinder, is to be the reverse ofthe nearer cam. In practice we make the two cams from one pattern andplace them reverselv on the shaft on which they rock. For instance, itwill be noticed in Fig. 3 that link 16 takes hold of a wrist in theupper portion of the cam, and it will be noticed that at the lowerportion of the cam there is an idle boss without a wrist. By taking thiscam and turning it upside down and putting a wrist in the idle boss thecam will be in reverse of its present arrangement.

As seen in Figs. 4 and S the inner arm of the valve-rocker is shorterthan the outer arm,l this being a not unusual valve-rocker construction.The nearer cam may be driven from a wrist in axial extension of thewrist engaged by eccentric-rod 5, and in order to get a wrist at properradial distance from the center of the valve-rocker to drive the farthercam we have recourse to the extension 25 to carry the cam-driving wrist.

lVe claim:-

1. In engine lubricating mechanism, the combination of a horizontalcylinder having an oil inlet near each end of the upper side thereof, avalve rocker, t-wo pumps, a cam, an operating connection between saidcam and one of the pumps, an operating connection between said cam andthe valve rocker, another identical cam in reversed position, anoperating connection between said cam and the other pump, and anoperating connection between said cam and the valve rocker.

2. In engine lubricating mechanism, the combination of a horizontalcylinder having an oil inlet near each end of the upper side thereof,said inlets being somewhat on opposite sides of the longitudinal aXis ofsaid cylinder, a valve rocker, two pumps, a cam, an operating connectionbetween said cam and one of the pumps, an operating connection betweensaid cam and the valve rocker, another identical cam in reversedposition, an operating connection between said cam and the other pump,and an operating connection between said cam and the valve rocker.

3. A horizontal steam-engine cylinder provided with an oil-inlet neareach end of its upper portion, a check-valve at each of said inletsarranged to open to the cylinder, an oil-pump provided with a pair ofindependently operable rockers, independent conduits from the pump tosaid oil-inlets, a pair of oscillating cams, links connecting the camswith a portion of the valve-gear of the engine to cause the valve-gearto rook the cams, and links connecting the pump' rockers with the camsto cause the cams to rock the pump-rockers, combined substantially asset forth.

4. A horizontal steam-engine cylinder provided with an oil-inlet neareach end of its upper portion, a check valve at each of said inletsarranged to open to the cylinder, an oil-pump provided with a pair ofindependently operable rockers, independent conduits from the pump tosaid oil-inlets, a pair of oscillating cams, links connecting the camswith a portion of the valve-gear of the engine to cause the valve-gearto rock the cams, links connecting the pump-rockers With the cams toCause the cams to rock the pump-rockers, and means for varying thelength of the rst-Inentioned links, combined substantially as set forth.

5. A horizontal steamengine cylinder provided With an oil-inlet neareach end of its upper portion, a check-Valve at each of said inletsarranged to open to the cylinder, an oil-pump provided With a pair ofindependently operable rockers, independent conduits from the pump tosaid oil-inlets, a

pair of slotted oscillating cams, links connecting the cams with aportion of the Valve-gear of the engine whereby the Valvegear may rookthe cams, a slotted guide iiX- edly supported alongside each cam, apivotblock engaging each guide and the slot of the appropriate cam, anda link connecting each pivot-block With one of the pump-rockers,combined substantially as set fort-h.

ROBERT C. HOLMAN. GEORGE I. THEILE. Witnesses:

M. S. BELDEN, GEO. JOHNSON.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

